It was another big night for the stars of country music at the 2011 Academy of Country Music awards.  But, for me, a rock-and-roll guy stole the show.  Steven Tyler from Aerosmith (and American Idol) joined Carrie Underwood on stage as she sang her song "Undo It."  Then things ratcheted up a notch as the duo kicked into to a frolicking, flirty version of Aerosmith's "Walk This Way."  Good stuff!